Saw this twice long ago on Creature Features, hosted by the late great Bob Wilkins (Bay Area folk of a certain age will nod). It's the best kind of low budget science fiction, lean, fast, and unpretentious. It plays as much like an action movie as sci-fi, to be honest, much of the film is an extended chase, but very well done. The lead actor is unknown to me but fine in the role(s). Stanley Adams, Cyrano Jones on the original Star Trek, has a choice role as a scientist (and gets the last word in the movie). Best of all, Gregory Sierra plays a particularly nasty hit-man, in what can almost be seen as a prelude to his role in the excellent Deep Cover many years later.
No idea if this is available anywhere or ever gets aired (TCM, are you listening?), but well worth the time if you get the chance.
No idea if this is available anywhere or ever gets aired (TCM, are you listening?), but well worth the time if you get the chance.